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Summary: Without free electricity it's highly likely that whatever you purchase through a manufacturer will even come close to ROI'ing at this point. With free electric and a bulk hardware purchase that results in some serious discounts there's a slim chance you'll get close (but doubtful)
This, exactly.
Without solar power from the Northern Lights, natural cooling from the North Pole, a handshake agreement with Bitfury to use a million of their ASICs for a cup of coffee, this is where we are at.
Mining <> Profit
No such thing as ROI as of today, 2015.
